Patent US3887655A successfully refreshed from Google Patents.
US3887655A
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Phosphoramidate esters of dibromoneopentylglycol
Assignee: Stauffer Chemical Co
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Filing: 1973-08-20
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Granted: 1975-06-03
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Expires: 1993-08-20
Abstract
Abstract Novel phosphoramidate esters of dibromoneopentylglycol are prepared, e.g. by reacting a benzene solution of 2,2''-bis bromomethyl-1,3-propanediol with POCl3 to make an intermediate. Dimethylamine is reacted with the intermediate to made the following structure: These materials are useful as flame retardants when blended into polymeric materials.
Inventors
- 👤 Kyung S Shim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:56
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/657154; C08; C08K; C08K5/00; C08K5/49; C08K5/5399
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
8 words
COMPOSITIONS OF MATTER IN ACCORDANCE WITH THE FORMULA:
Claim 2
Dependent Claim
8 words
COMPOSITIONS OF MATTER IN ACCORDANCE WITH THE FORMULA:
Claim 3
Dependent Claim
8 words
Compositions of matter in accordance with the formula:
Claim 4
Dependent Claim
8 words
Compositions of matter in accordance with the formula:
Claim 5
Dependent Claim
16 words
The composition of claim 1 wherein X is oxygen, and R1 and R2 are each methyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |